1 #ifndef __ASM_SH64_USER_H 2 #define __ASM_SH64_USER_H 3 4 /* 5 * This file is subject to the terms and conditions of the GNU General Public 6 * License. See the file "COPYING" in the main directory of this archive 7 * for more details. 8 * 9 * include/asm-sh64/user.h 10 * 11 * Copyright (C) 2000, 2001 Paolo Alberelli 12 * 13 */ 14 15 #include <linux/types.h> 16 #include <asm/processor.h> 17 #include <asm/ptrace.h> 18 #include <asm/page.h> 19 20 /* 21 * Core file format: The core file is written in such a way that gdb 22 * can understand it and provide useful information to the user (under 23 * linux we use the `trad-core' bfd). The file contents are as follows: 24 * 25 * upage: 1 page consisting of a user struct that tells gdb 26 * what is present in the file. Directly after this is a 27 * copy of the task_struct, which is currently not used by gdb, 28 * but it may come in handy at some point. All of the registers 29 * are stored as part of the upage. The upage should always be 30 * only one page long. 31 * data: The data segment follows next. We use current->end_text to 32 * current->brk to pick up all of the user variables, plus any memory 33 * that may have been sbrk'ed. No attempt is made to determine if a 34 * page is demand-zero or if a page is totally unused, we just cover 35 * the entire range. All of the addresses are rounded in such a way 36 * that an integral number of pages is written. 37 * stack: We need the stack information in order to get a meaningful 38 * backtrace. We need to write the data from usp to 39 * current->start_stack, so we round each of these in order to be able 40 * to write an integer number of pages. 41 */ 42 43 struct user_fpu_struct { 44 unsigned long long fp_regs[32]; 45 unsigned int fpscr; 46 }; 47 48 struct user { 49 struct pt_regs regs; /* entire machine state */ 50 struct user_fpu_struct fpu; /* Math Co-processor registers */ 51 int u_fpvalid; /* True if math co-processor being used */ 52 size_t u_tsize; /* text size (pages) */ 53 size_t u_dsize; /* data size (pages) */ 54 size_t u_ssize; /* stack size (pages) */ 55 unsigned long start_code; /* text starting address */ 56 unsigned long start_data; /* data starting address */ 57 unsigned long start_stack; /* stack starting address */ 58 long int signal; /* signal causing core dump */ 59 struct regs * u_ar0; /* help gdb find registers */ 60 struct user_fpu_struct* u_fpstate; /* Math Co-processor pointer */ 61 unsigned long magic; /* identifies a core file */ 62 char u_comm[32]; /* user command name */ 63 }; 64 65 #define NBPG PAGE_SIZE 66 #define UPAGES 1 67 #define HOST_TEXT_START_ADDR (u.start_code) 68 #define HOST_DATA_START_ADDR (u.start_data) 69 #define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG) 70 71 #endif /* __ASM_SH64_USER_H */ 72